Question

way to store water to irrigate the low - lying valleys of arizona and southern california and to protect those areas from floods. by this time, too, developers in los angeles and other rapidly growing cities in southern california had added their powerful support for the project. they saw the dam as a potential source of water and hydroelectric power for homes, businesses, and factories.
in 1922, the seven states of the colorado river basin met to decide how to divide the waters of the river. herbert hoover, who was at that time the secretary of commerce for president calvin coolidge, led the discussions. most of the states were afraid california was going to get more than its fair share of the water. ultimately, they managed to agree on a document called
how do the second and third paragraphs work together?
they identify a solution to a problem and then show how it was implemented.
they identify a solution to a problem and then explain why it was impractical.
they describe a natural disaster and then point out an unexpected outcome.
they describe the goals of citizens and then the goals of politicians.

Explanation:

The first - mentioned problem is the need for water storage for irrigation and flood protection in certain areas, and the potential for water and power from a dam. The second paragraph shows the solution - the states coming together to divide the river's waters, and how the agreement was reached. It shows implementation of a solution to the problem.

Answer:

They identify a solution to a problem and then show how it was implemented.